The MR-EKCBL10M-H is Mitsubishi Electric’s 10-metre heavy-duty flexible encoder cable for MR-J2S series servo amplifiers and HC-KFS, HC-MFS, HC-SFS, and HC-RFS series servo motors — the 10-metre variant of the MR-EKCBL heavy-duty flex encoder cable, designed for MR-J2S installations where the motor-to-amplifier distance falls in the 5 to 10 metre range and the cable routing requires the heavy-duty flex construction of the H-rated variant for energy chain or other repeated-flexing moving axis installations. The MR-EKCBL10M-H is available through Atlantech Drives — quote within 24-48 hours, worldwide express shipping, 12-month warranty.
What Is the MR-EKCBL10M-H?
The MR-EKCBL10M-H is a Mitsubishi Electric servo encoder cable from the MR-EKCBL series providing a 10-metre encoder connection between MR-J2S series servo amplifiers and their compatible J2S-era HC-series servo motors. Functionally identical to the MR-EKCBL5M-H in construction, connector types, and signal specification, the MR-EKCBL10M-H doubles the cable length to 10 metres — covering installations where the servo panel is mounted further from the machine structure, such as floor-standing panels serving large-format machine tools, gantry systems with long panel-to-motor distances, or central control rooms serving multiple machines. The 15-pin D-Sub amplifier-side connector mates with the MR-J2S CN2 encoder port on all MR-J2S-A and MR-J2S-B amplifiers, while the motor-side connector connects to the J2S-era HC-series motor’s encoder port. At 10 metres, the cable weight is approximately double that of the 5-metre variant — adequate strain relief and cable support at both ends and along the routing path is more critical at this length to prevent connector body fatigue from unsupported cable weight. The heavy-duty «H» construction provides the same energy chain flex rating as the shorter MR-EKCBL variants, though at 10 metres the cable’s mass in a moving energy chain generates higher dynamic forces at the flex point that must be considered in the energy chain installation design.
Key Technical Specifications
- Model: MR-EKCBL10M-H
- Cable Length: 10 metres
- Amplifier-Side Connector: 15-pin D-Sub (MR-J2S CN2 encoder port)
- Motor-Side Connector: J2S-era HC-series motor encoder connector
- Construction: Heavy-duty flex (H) — rated for moving axis / energy chain installation
- Signal Type: J2S-era serial encoder (HC-series motor encoder protocol)
- Compatible Amplifiers: MR-J2S-A and MR-J2S-B series (all power ratings)
- Compatible Motors: HC-KFS, HC-MFS, HC-SFS, HC-RFS series (J2S-era motors)
- Shielding: Overall braid shield
- Operating Temperature: -20°C to 70°C
- Series: MR-EKCBL (J2S era — distinct from MR-J3ENCBL used for J3/J4)
Typical Industrial Applications
The MR-EKCBL10M-H is specified for MR-J2S servo installations where the motor-to-amplifier distance requires more than 5 metres of cable reach — typically large machine tools, gantry systems, and multi-machine configurations where the servo panel is mounted at a significant distance from the machine working area. In large-format horizontal boring mills and floor-type boring machines built on MR-J2S SSCNET platforms (with Q172CPU or Q173CPU motion controllers), the servo amplifier panel is often mounted in a separate electrical room 6 to 10 metres from the machine, requiring the MR-EKCBL10M-H for the longer encoder cable runs to the X, Y, and Z axis motors. Large-format gantry plasma cutting and laser cutting machines with operator panels at one end of a 8 to 10-metre cutting table use MR-EKCBL10M-H cables for the encoder connection from the servo panel to the far-end gantry motors — where the 5-metre MR-EKCBL5M-H is too short for the cable routing path through the machine’s cable management system. In automotive body shop transfer line machines built on MR-J2S-era servo platforms, the servo amplifier panels are typically positioned in a central electrical enclosure serving multiple transfer stations distributed along the production line — stations at distances of 7 to 10 metres from the panel require the MR-EKCBL10M-H for the encoder cable connection. Press room automation systems with MR-J2S servo feeds where the servo panel is mounted on the press structure at a distance from the feed mechanism also use the MR-EKCBL10M-H for encoder cable runs that exceed the MR-EKCBL5M-H’s reach.
Troubleshooting Guide
For MR-EKCBL10M-H cables generating intermittent AL.16 (encoder error) alarms in MR-J2S installations, the longer cable length introduces additional diagnostic considerations compared to shorter cables. At 10 metres, the cable’s distributed capacitance is approximately twice that of the 5-metre cable — while still within the J2S encoder signal specification, the higher capacitance can interact with marginally degraded amplifier encoder receiver circuits or marginal motor encoder driver circuits to cause signal timing violations at high motor speeds. If intermittent AL.16 occurs only at high motor speeds on a 10-metre cable, substitute a 5-metre cable temporarily to confirm whether the cable length is contributing to the fault — if the fault disappears with the shorter cable, the system is operating at the margin of the 10-metre cable’s signal integrity limit, indicating either marginal encoder transmitter performance in the motor (encoder approaching end of life) or marginal encoder receiver performance in the amplifier (amplifier encoder interface degraded). For MR-EKCBL10M-H cables in energy chain applications generating AL.16 after several years of service, the most common physical fault is conductor fatigue at the cable’s tightest bend point during axis travel — at 10 metres, the cable’s greater mass means higher dynamic forces at the flex point, accelerating fatigue compared to a 5-metre cable at the same bend radius. Identify the tightest bend position in the energy chain by observing the cable during slow axis travel, and inspect the cable jacket at this position for cracking. If jacket cracking is found, measure the conductor continuity at the affected position using a multimeter with the cable flexed to the minimum bend radius — open or intermittent conductors confirm fatigue failure requiring cable replacement.
Frequently Asked Questions
Q: What is the recommended energy chain minimum bend radius for the MR-EKCBL10M-H, and does it differ from the 5-metre variant?
A: The minimum bend radius specification for the MR-EKCBL10M-H is determined by the cable’s outer diameter and the H-rated construction standard — not by the cable length. The minimum bend radius is therefore the same as the MR-EKCBL5M-H (both are the same cable construction, just different lengths). Consult the MR-EKCBL series technical data for the specific minimum bend radius — specify this value to the energy chain manufacturer when selecting the chain size and bend radius for the installation.
Q: Can the MR-EKCBL10M-H signal integrity be improved by adding an external shield drain to the 15-pin D-Sub amplifier connector?
A: The MR-EKCBL10M-H’s overall braid shield should be connected to earth at the amplifier end via the 15-pin D-Sub connector’s shell — the D-Sub shell provides the shield termination path to the amplifier chassis earth when the connector is correctly installed. Adding additional shield drain connections does not improve signal integrity if the D-Sub shell connection is already correctly made. If intermittent encoder errors are suspected to be EMI-related on the 10-metre cable run, verify that the D-Sub connector shell is making solid contact with the amplifier’s CN2 connector shell and that both shells are connected to chassis earth — a floating or poorly contacted shield is more often the cause of EMI-induced encoder errors than insufficient shield coverage.
Q: Is the MR-EKCBL10M-H stocked as a standard item, or does it require special ordering?
A: The MR-EKCBL10M-H is a standard catalogue item that Atlantech Drives maintains in stock for immediate dispatch — as a discontinued J2S-era cable, availability from the wider market is increasingly limited, and specialist distributors maintaining dedicated legacy J2S accessory stock provide the most reliable access to this cable. Contact Atlantech Drives to confirm current stock levels and lead time before planning maintenance schedules that depend on MR-EKCBL10M-H availability.
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